chore: add script for creating a release

build.gradle

@@ -2,6 +2,7 @@ plugins {
   id 'java'
   id 'java-library'
   id 'maven-publish'
+  id 'signing'
   id 'com.diffplug.spotless' version "8.10.0"
 }
 
@@ -16,6 +17,7 @@ java {
   toolchain {
     languageVersion.set(JavaLanguageVersion.of(21))
   }
+  withJavadocJar()
   withSourcesJar()
 }
 
@@ -39,18 +41,38 @@ publishing {
   publications {
     javaMatrixBotLib(MavenPublication) {
       from components.java
+      pom {
+        name = "Java Matrix Bot Lib"
+        description = "Library proving an API to interact with a matrix server as a bot."
+        url = "https://github.com/synyx/java-matrix-bot-lib"
+        licenses {
+          license {
+            name = 'The Apache License, Version 2.0'
+            url = 'http://www.apache.org/licenses/LICENSE-2.0.txt'
+          }
+        }
+        scm {
+          connection = 'scm:git:git://github.com/synyx/java-matrix-bot-lib.git'
+          developerConnection = 'scm:git:ssh://github.com:synyx/java-matrix-bot-lib.git'
+          url = 'https://github.com/synyx/java-matrix-bot-lib'
+        }
+      }
     }
   }
 
   repositories {
     maven {
-      name = 'synyxPublicReleases'
-      url = uri('https://nexus.synyx.de/repository/public-releases/')
-      credentials(PasswordCredentials)
+      name = "LocalMavenWithChecksums"
+      url = uri(layout.buildDirectory.dir("staging-deploy"))
     }
   }
 }
 
+signing {
+  useGpgCmd()
+  sign publishing.publications.javaMatrixBotLib
+}
+
 spotless {
   groovyGradle {
     greclipse()

scripts/prepare-release.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+set -e
+
+usage() {
+	echo "Usage: prepare-release.sh <VERSION>"
+	echo "  VERSION must be in semver format (e.g. 1.0.0)"
+}
+
+# Go to root dir
+cd "$(dirname "$0")/.." || exit 2
+
+VERSION="$1"
+
+if [[ ! ("${VERSION}" =~ ^[0-9]+\.[0-9]\.[0-9]$) ]]; then
+	usage
+	exit 1
+fi
+
+STAGING_FOLDER="build/staging-deploy"
+OUTFILE="java-matrix-bot-lib-${VERSION}.zip"
+./gradlew -Pversion="${VERSION}" clean build publishJavaMatrixBotLibPublicationToLocalMavenWithChecksumsRepository
+pushd "${STAGING_FOLDER}"
+[ -e "${OUTFILE}" ] && rm -- "${OUTFILE}"
+zip -r "${OUTFILE}" ./org/synyx/java-matrix-bot-lib
+popd
+echo ""
+echo "Successfully created release ${STAGING_FOLDER}/${OUTFILE}"
+echo "Deployment Name: org.synyx:java-matrix-bot-lib:${VERSION}"